ANATOMY

Detailed explanation-1: -When the ventricles contract, the blood should go out of the heart and not back to the atrium. This backflow of blood is prevented by valves. Tricuspid valve prevents backflow of blood from right ventricle to right atrium. Bicuspid valve prevents backflow of blood from left ventricle to left atrium.

Detailed explanation-2: -Answer and Explanation: The bicuspid (mitral) valve is also called the left atrioventricular (AV) valve which is located between the left atrium and ventricle. For this reason, the bicuspid valve prevents back flow from the left ventricle to the left atrium which would be consistent with answer choice “B".

Detailed explanation-3: -Mitral Valve Prevents the back flow of blood from the left ventricle to the left atrium.

Detailed explanation-4: -The bicuspid valve prevents backflow from the left ventricle into the left atrium.

Detailed explanation-5: -The alternate name for the bicuspid valve is the mitral valve. The semilunar valves prevent the backflow of blood into the atria when the ventricles are contracting.